Army develops laser guided smart bullets for new rifle

Popular Science:

It would be hard to describe a bullet as smart, but what if that bullet was laser-guided, radio-controlled, and carried an onboard targeting CPU? The US Army has announced the creation of the XM25 rifle, which can fire a new type of explosive round that fit that exact description. Imagine the implications: hitting targets inside buildings or hiding around walls. Whoa.

First, the scope on the rifle has a laser that gauges the distance to the target. The soldier can set exactly where the 25-millimeter bullet will detonate by adding or subtracting 3 meters from that point. Then, the scope will send a radio signal to a chip inside the bullet telling it how far it should travel before exploding.

Now, here’s where things get truly nuts: Each bullet has a small magnetic transducer that interacts with the Earth’s magnetic field, generating a tiny alternating current every time it spins as it speeds toward the target. Measured against the gun's specially calibrated rifling, this means the bullet can keep track of how far it has traveled in real time. Whoa, again.

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Because the rounds are explosive they can be used like indirect fire weapons detonating over trenches and fighting holes. The rifle has the same digital camouflage as the Army's battle uniforms that have been used in Iraq and Afghanistan. This makes both the soldier and the weapon hard to see.